Question

(Photo) Please help mee
The two solids below are similar, and the ratio between the lengths of their edges is 3:5. What is the ratio of their surface areas?

Answer 1

$\text {Ratio of surface area} = ( \dfrac{3}{5} )^2= \dfrac{9}{25}$

Answer:  9 : 25

Answer 2

Answer:

Step-by-step explanation:

Alright, lets get started.

The surface area of green solid is :

$2 (3*3 + 3*3 + 3*3) = 2*27=54$

The surface area of orange solid is :

$2(5*5 + 5*5 + 5*5) =2*75= 150$

So the ratios of their surface area will be :

$\frac{54}{150}$

$\frac{18}{50}$

$\frac{9}{25}$

Hence the answer is 9:25   :  Answer Hope it will help :)